Nelsen C-Series AIO Katalox Filter 4800 GPD Comm RO The FL62103-59 Fleck 3900 Lower

The FL62103-59 Fleck 3900 Lower PH valve is engineered to provide reliable control and seamless operation for your water softener system

The AIO Plus control valve features independently programmable air-draw and backwash cycles

Mixed Bed Ion Exchange Resin – Combines cation and anion resins to remove a broad spectrum of dissolved ions

When the original valve disc wears or becomes damaged

helping you protect your household’s water purity and system longevity

Nelsen C-Series AIO Katalox Filter 4800 GPD Comm RO The FL62103-59 Fleck 3900 LowerThe CS AIO 10"x54" Katalox System combines Nelsen's Connected Series AIO Plus air injection control with premium Katalox Light media for multi contaminant well water treatment. Katalox Light is a catalytic media effective on iron, manganese, and hydrogen sulfide, making this a strong choice when water carries more than one nuisance contaminant and a single dedicated filter will not cut it. Smart Bluetooth connectivity through the free Legacy View app